Dave East
type: MusicGroup
description: David Lawrence Brewster Jr. (born June 3, 1988), known professionally as Dave East, is an American rapper. East began his career in 2010, and gained attention in 2014 for his eighth mixtape, Black Ros
popularity: 24
followers: 26
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d3ae2aee42c8d8cf7cb97a8c286f15269527d2eb847fa103ef38f3152a7c24. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45b77847-6684-462d-93bf-915addda41a0.json and https://artists.proofprofile.net/proofs/artist/45b77847-6684-462d-93bf-915addda41a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xc3d3ae2aee42c8d8cf7cb97a8c286f15269527d2eb847fa103ef38f3152a7c24","name":"Dave East","registered_at":"2026-06-12T15:21:03Z","symbol":"NIM0090909","token_address":"0xb51e9c80c63eea739e67985a5d62eb516037f1c3","type":"artist","uuid":"45b77847-6684-462d-93bf-915addda41a0"}
track: Blueprint

Blueprint
type: MusicRecording
duration: PT5M38S
duration ms: 338220
explicit: false
by artist: Bino Rideaux
by artist: Nipsey Hussle
by artist: Dave East
in album: No Pressure
  type: MusicAlbum
  date published: 2017-12-17
isrc code: TCADK1739339
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additional property: CopyrightStatus
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7296fb850231e372fd50dfa7da8503d7366a0ce0af1fb3fe1e0bed640ada2562. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADK1739339.
  date published: 2026-06-13T12:47:07Z
audio: Blueprint
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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